MAX4461UESA-T

Instrumentation, Op Amps, Buffer Amps Overview

The MAX4461UESA-T is a precision instrumentation amplifier from the Analog Devices/Maxim Integrated MAX4460/MAX4461/MAX4462 family. It operates on a single supply voltage ranging from 2.85V to 5.25V with a typical quiescent current of 700µA, dropping below 1µA in shutdown mode. The device features a fixed gain of 1 (indicated by the 'U' suffix), a 2.5MHz gain-bandwidth product, and a typical input offset voltage of 100µV. It includes a logic-controlled shutdown pin for power management and utilizes a proprietary indirect current-feedback design.

Instrumentation, Op Amps, Buffer Amps Feature Summary

• Proprietary indirect current-feedback architecture enabling ground-sensing capability combined with ultra-low input bias current.
• Logic-controlled shutdown function that reduces supply current to less than 1µA when activated.
• Rail-to-rail output stage optimized for small-signal differential voltages with high-impedance CMOS inputs.

Instrumentation, Op Amps, Buffer Amps Applications

• Industrial Process Control
• Strain-Gauge Amplifiers
• Transducer Interface
• Precision Low-Side Current Sense
• Low-Noise Microphone Preamplifier

Instrumentation, Op Amps, Buffer Amps Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Ensure the selected variant matches the required gain configuration and interface requirements for the target application circuit.

Instrumentation, Op Amps, Buffer Amps Selection Notes

Select this component for applications requiring low-power operation with precise signal conditioning. The fixed unity gain makes it suitable for buffering or direct amplification where minimal signal alteration is needed. Consider the shutdown feature for battery-powered systems requiring extended standby life.

Instrumentation, Op Amps, Buffer Amps Part Context

This part belongs to the MAX446x series of 3V/5V single-supply rail-to-rail instrumentation amplifiers. The family includes adjustable gain (MAX4460) and reference-input variants (MAX4462). The MAX4461 specifically offers fixed gains with a shutdown control, distinguishing it within the product line.

Instrumentation, Op Amps, Buffer Amps Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.

Instrumentation, Op Amps, Buffer Amps FAQ

How does the MAX4461 handle shutdown?

The MAX4461 features a SHDN pin. Driving this pin low switches off internal blocks, reducing supply current to typically less than 0.1µA. Driving it high enables normal operation.

What is the input common-mode range?

The input common-mode range extends from 0.1V below the negative supply to 1.7V below the positive supply, allowing for ground sensing in single-supply configurations.